Using R10.6....

For a specific project how can I add a jar to the 'Web App Libraries' jar listing?

davout,

You can just copy the jar to the WEB-INF/lib directory of the project.
The jar is automatically added to the project classpath if its a web project.
if its not a web project you can right click on the library and go to "Build Path" -> "Add to Build Path".

Let us know if you see any issues.

It would nice if these extra web app libraries could be treated like other libraries, i..e appear as a 'library' entry on the project 'Libraries' list.

Is it worth posting an enhancement request?

davout,

Please check my response here:
http://www.myeclipseide.com/index.php?name=PNphpBB2&file=viewtopic&p=131926